LE BOURGET, France (AP) — Just a dot on the horizon at first, the bug-like and surprisingly quiet electrically-powered craft buzzes over Paris and its traffic snarls, treating its doubtless awestruck passenger to privileged vistas of the Eiffel Tower and the city’s signature zinc-grey rooftops before landing him or her with a gentle downward hover. And thus, if all goes to plan, could a new page in aviation history be written. After years of dreamy and not always credible talk of skies filled with flying, non-polluting electric taxis, the aviation industry is preparing to deliver a future that it says...